In addition to being a YouTube beauty vlogger with more than nine million subscribers, Tati Westbrook is also the founder and CEO of a vitamin company called Halo Beauty.

Westbrook’s brand launched in February 2018 and sells three types of vitamin supplements at the time of writing. Its products promise desirable results, like glowing skin and reduced stress, and have proven to be popular among a wide audience. However, the brand has also been widely criticized, as many feel its products are a scam.

Now, some people on social media say they haven’t received orders from Halo Beauty months after making a purchase from the brand. Others have also accused Westbrook and her team of ignoring emails and social media messages from customers.

People on social media are questioning why they haven’t received vitamins they say they’ve ordered from Halo Beauty

Recently, many people on Twitter have said they purchased Halo Beauty vitamins months ago, but have yet to receive them.

Others have also accused Westbrook and her brand of ignoring its customers over email and social media.

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A representative for Halo Beauty responded to a customer about the issue on Instagram

Halo Beauty shared a photo of its original vitamins, the "Hair, Skin, and Nails Booster," to the brand's Instagram page on Wednesday. In the comment section of the post, many asked the brand about missing orders and refunds.

"I have been trying to return my kiwi bottle for about two months now," an Instagram user wrote. "I have contacted customer service so many times and no one will get back to me! Please help!!"

"I ordered 2 kiwi [bottles] on June 27 and I haven't received the confirmation mail yet," another person said. "I commented on one post and got the answer that they would send this to customer service, but I haven't heard anything from you guys. Please look into this, I have run out of my Hair, Skin, Nails vitamins, and soon my patience too."

"I hate to sound like a broken record, but what is the deal with customer service?" someone wrote. "It's been 2 weeks and I've yet to hear back."

"I ordered on May 21, the package was returned to sender, and no one has answered any of my mails [sic]," another person said.

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A representative for Halo Beauty wrote back to the latter comment, saying, "I'll check in on this for you."

Some people, however, weren't convinced by the response. In a separate comment, an Instagram user said Halo Beauty rarely responds to its customers.

"They don't respond to any emails," someone wrote on Instagram. "The person who runs this social media's name is Alex, and they'll assure you [that] customer service will reach out, and they never do."

Halo Beauty has been both praised and criticized by consumers, while health experts are skeptical of the benefits of supplements

When Halo Beauty launched in February 2018, some people criticized the brand for selling vitamin supplements, which many health experts have said are usually unnecessary at best and a scam at worst.

As INSIDER's Julia Naftulin previously reported, vitamin supplements can rarely provide health benefits that aren't already achievable by eating a balanced diet. Instead, "taking unnecessary supplements" can sometimes lead to "negative side effects," Naftulin reported.

Scientists have yet to learn all there is to know about vitamin supplements. The US Food & Drug Administration (FDA) does not currently deem supplements to be safe until they're proven unsafe. The FDA also allows supplement companies to manufacture and package products on their own without approval from the administration.

Read more: The explosive YouTube war between James Charles and Tati Westbrook is all because of vitamin supplements. Health experts say they can be a scam.

Still, Westbrook's business has seemingly been booming in recent months - especially after she became embroiled in a public feud with fellow YouTuber James Charles.

In May, one Twitter user said Halo Beauty sent an email to people who had placed orders, informing them that the brand was "a few days behind" its shipping process.

"Due to an unexpected influx of orders, we are a few days behind processing your shipment," Halo Beauty appears to have written in an email sent to customers in May. "Please know that our Halo elves are hard at work, and everything should be running smoothly by the end of this week!"

It's unclear if Halo Beauty is still experiencing an influx of orders nearly two months after Westbrook's feud with Charles subsided.

Representatives for Tati Westbrook and Halo Beauty did not immediately reply to INSIDER's request for comment.

Have you had a negative experience with an order from Halo Beauty? We'd love to hear from you. Email [email protected].